HTC announced that its fantastic Vive Trackers are available for developer purchase recently.You can go right ahead and purchase them at your leisure on Vive's website.https://www.vive.com/us/vive-tracker/

The Trackers will set you back $99; you'll also be able to attach the 10cm devices on nearly everything you want, literally bringing a whole new dimension to the VR experiences you create or embark on.Just take my money~~!!!